1. Baker LC, Baker LS (1994) Excess cost of emergency department visits for nonurgent care. Health Aff 13:162–171
2. Weinick RM, Burns RM, Mehrotra A (2010) Many emergency department visits could be managed at urgent care centers and retail clinics. Health Aff 29:1630–1636
3. Nawar EW, Niska RW, Xu J (2007) National Hospital Ambulatory Medical Care Survey: 2005 emergency department summary. Adv Data 358:1–32
4. Rui P, Kang KAM (2013) National Hospital Ambulatory Medical Care Survey: 2013 Emergency Department Summary Tables. CDC
5. Oster A, Bindman AB (2003) Emergency department visits for ambulatory care sensitive conditions: insights into preventable hospitalizations. Med Care 41:198–207